Peter T. mentioned "The Outer Limits" above. That program scared the shit out of me. I guess it's just the fact that it originally came out when I was at exactly the right age (eleven or so) to be allowed to watch the scary stuff, but not yet old enough to be a jaded little smart-ass teenager. The episode about the guy who, I guess, used a time machine to see what people would evolve into in the future and grew a big ole bubbly head and extra fingers caused nightmares for weeks. I don't really remember seeing any episodes of "The Twilight Zone" until it hit syndication. By then I was too cool to be scared by 'em.